50421402 has 48 divisors (see below), whose sum is σ = 115596000. Its totient is φ = 15839712.

The previous prime is 50421379. The next prime is 50421403. The reversal of 50421402 is 20412405.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (50421403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129424 + ... + 129812.

It is an arithmetic number, because the mean of its divisors is an integer number (2408250).

Almost surely, 2^50421402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50421402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57798000).

50421402 is an abundant number, since it is smaller than the sum of its proper divisors (65174598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50421402 is a wasteful number, since it uses less digits than its factorization.

50421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 50421402 is about 7100.8029123473. The cubic root of 50421402 is about 369.4352279676.

Adding to 50421402 its reverse (20412405), we get a palindrome (70833807).

The spelling of 50421402 in words is "fifty million, four hundred twenty-one thousand, four hundred two".